Hardrace Rear Lower Control Arms (Pillow Ball) – Nissan

Hardrace Rear Adjustable Lower Control Arms V2 (Pillow Ball) – Nissan S13 / R32 / Z32 (8637)

Product Overview

When lowering a classic S13 or R32 Skyline, the rear suspension geometry pushes past its ideal operating window, causing binding, accelerated inner tire wear, and poor roll-center values. Available at JDMaster.net, this high-performance package replaces your thin, non-adjustable factory stamped-steel rear lower control arms (RLCAs) with high-strength braced steel assemblies. Pre-assembled with motorsport-grade spherical pillow ball bushings and including adjustable stabilizer end links, this V2 set allows you to fine-tune your lower ball joint placement and track width layout to establish a perfectly anchored tire footprint.

Key Features & Benefits

• Version 2 Adjustable Plate Layout: Engineered with an adjustable ball joint plate design that allows precision fine-tuning of rear track width and roll center tracking.

• Zero-Deflection Motorsport Pillow Balls: Pre-installed with zero-clearance spherical metal joints encased in premium weather-proof anti-dust boots. They completely eradicate the elastic “give” of OEM rubber for immediate chassis feedback.

• Complete 4-Piece Upgrade Set: Comes pre-packaged with a matching pair of heavy-duty adjustable stabilizer end links to ensure your rear anti-roll bar geometry coordinates with your revised track layout.

• Reinforced High-Tensile Steel Boxing: Fabricated from heavy-gauge, hardened steel alloy with robust stitch-welded reinforcement gussets to resist twisting and bending under aggressive track curbing or heavy acceleration.

• Prevents Dynamic Geometry Changes: Stabilizes the lower knuckle alignment lines under intense lateral cornering or rapid drift clipping transitions, delivering exceptional predictability at the traction limit.

• Premium ED Anti-Corrosion Treatment: Coated with Hardrace’s proprietary Electrophoretic Deposition (ED) base layers to defend the steel against water ingress, mud, and mechanical track debris.

Technical Specifications

Applications

• Nissan Silvia / 180SX / 240SX (1989–1994 — S13 / PS13 / RPS13 Chassis)

• Nissan Skyline (1989–1994 — R32 GTS-T / GTR / AWD & RWD Layouts)

• Nissan Fairlady Z / 300ZX (1989–2000 — Z32 Chassis)

• Nissan Cefiro (1988–1993 — A31 RWD Chassis)

The Mechanical Advantage: Why Choose the Adjustable V2 Layout?

On an S13 or R32, the rear lower control arm handles immense multi-directional forces. It supports the shock assembly, establishes the lower track width, and manages structural cornering loads. When these platforms are aggressively lowered, the factory non-adjustable lower arm pulls the bottom of the hub assembly inward, which alters your roll center and shortens your track width. Standard eccentric alignment bolts lack the physical range to restore balance.

The Hardrace 8637 V2 arms solve this geometric restriction by moving past a fixed design. The adjustable ball joint plate lets your alignment technician physically extend the lower pivot out further than stock boundaries. Widening this track footprint instantly lowers your dynamic roll center, while the solid spherical pillow balls prevent the arm from shifting under load. The result is a substantial increase in cornering stability, a highly predictable breakaway point, and maximum contact patch utilization when putting down high horsepower.

Professional Lift Installation & Alignment Notes

Technical Fitting Note:

Because adjusting the lower ball joint plate simultaneously alters your rear track width, roll center, toe parameters, and upper camber angles, a professional four-wheel laser alignment is strictly mandatory immediately following installation. You can arrange a specialized setup session at our fully equipped JDMaster.net workshop, where our technicians specialize in high-precision press work, custom arm indexing, and dedicated motorsport alignment profiling.

Warranty

The warranty on Hardrace products depends on the type of product, with a minimum warranty period of 2 years. This warranty does not cover damage caused by a car crash, improper use, negligence or normal wear and tear.